Which of these 2 w.angle lenses do i buy





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  1. #1
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    Default Which of these 2 w.angle lenses do i buy

    I am looking for a wide angle lens and was advised a 10-22mm USM would be a good choice.Searching Orms i came across these 2 lenses.Is there going to be all that diffrence considering the price.The 18-22 is a STM.Please give me your opinion.Usage will be leisure not for pro use.Thanks Tony
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  2. #2
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    Default Re: Which of these 2 w.angle lenses do i buy

    Which camera body do you have?
    Full-frame? Crop?
    And why wide-angle?

  3. #3
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    Default Re: Which of these 2 w.angle lenses do i buy

    I have a Canon 650d full frame body.Would like wide angle for landscape and some star photography

  4. #4
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    Default Re: Which of these 2 w.angle lenses do i buy

    Quote Originally Posted by TonyC View Post
    I have a Canon 650d full frame body.Would like wide angle for landscape and some star photography
    Hi Tony

    The 650d is a cropped sensor body, not full frame, that means that you will be able to use any of the two lenses as both are EF-S lenses. You cannot use the EF-S lenses on a full frame camera. The Canon full frames are the 5 d and the 6 d series. Also keep in mind that with the cropped sensor on a Canon camera a 10 mm is actually a 16 mm lens. On Nikon the factor is 1.5

    For astro photography I would look for a lens with the lowest aperture to get a much light as possible. Something like one of the old Rokinon 14 mm 2.8 manual lenses. Both the advertised lenses will work, but you might not get spectacular results, with astrophoto's equipment does make a difference.

  5. #5
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    Default Re: Which of these 2 w.angle lenses do i buy

    Unless you are happy with star trials (rather than pin-point stars) these lenses are both too slow (in terms of maximum aperture).

    To my mind, if you want pin-point stars on a crop-frame camera, there is currently only one lens to use. The Tokina 11-16 or 11-20 f2.8.

    Just my 2 cents.

    The more expensive lens you linked to above is a full stop slower, so your ISO will be double what you can use with the Tokina. That will be around 4000, and with the f3.5 you will be approaching 8000.

    The 14mm f2.8 Rokinon is nice on full frame, but on a crop it limits exposure time to about 15 seconds, once more pushing the ISO way up...
    Last edited by Peter Connan; 2019/06/25 at 01:37 PM.
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  6. #6
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    Default Re: Which of these 2 w.angle lenses do i buy

    I can't help with the lens choice and know nothing about star photography, but can confirm what Peter Connan (who seems to know a lot about the topic) said about the Tokina - I have the 11-20mm f2.8, but for Nikon, very sharp lens.
    Last edited by walkabout; 2019/06/26 at 04:49 PM.
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